Investigation plan

Ari puts 100 mL of cream, 100 mL of milk and 2 teaspoons of sugar into a small sealed bag. Ari places it inside a larger sealed bag containing 4 cups of ice and ½ cup of salt. Ari gently shakes the outer bag for 10 minutes while wearing mittens. The salt makes the ice bath colder than ice alone. Cold moves from the mixture into the ice bath, so the mixture freezes and thickens. This investigation tests one method; it does not compare different amounts of salt.